[googledatastore] Clean up googledatastore/pom file.
[googledatastore] Clean up googledatastore/pom file.

manolama/YCSB,leschekhomann/YCSB,ChristianNavolskyi/YCSB,cricket007/YCSB,leschekhomann/YCSB,madhurihn/YCSB_ToyDB,jaemyoun/YCSB,cricket007/YCSB,leschekhomann/YCSB,manolama/YCSB,madhurihn/YCSB_ToyDB,brianfrankcooper/YCSB,jaemyoun/YCSB,ChristianNavolskyi/YCSB,zyguan/ycsb,madhurihn/YCSB_ToyDB,cricket007/YCSB,brianfrankcooper/YCSB,brianfrankcooper/YCSB,zyguan/ycsb,jaemyoun/YCSB,zyguan/ycsb,cricket007/YCSB,ChristianNavolskyi/YCSB,jaemyoun/YCSB,ChristianNavolskyi/YCSB,zyguan/ycsb,manolama/YCSB,madhurihn/YCSB_ToyDB,manolama/YCSB,leschekhomann/YCSB,brianfrankcooper/YCSB